Measurements:
°C
°F
CURRENT WEATHER
06:10
Hilo
72°F
S 2 mph
Feels like: 72°F
Precip: 100%
World Resorts USA Hilo Weather

7 Day Weather Forecast

05.14
thu
DAY
76°F
W 7 mph
precip
100%
NIGHT
74°F
NW 3 mph
precip
100%
05.15
fri
DAY
78°F
W 8 mph
precip
100%
NIGHT
74°F
NW 1 mph
precip
100%
05.16
sat
DAY
80°F
NW 12 mph
precip
100%
NIGHT
74°F
N 7 mph
precip
100%
05.17
sun
DAY
82°F
NW 11 mph
precip
100%
NIGHT
76°F
NW 4 mph
precip
100%
05.18
mon
DAY
78°F
W 9 mph
precip
100%
NIGHT
74°F
SW 6 mph
precip
100%
05.19
tue
DAY
78°F
SW 10 mph
precip
100%
NIGHT
74°F
SW 7 mph
precip
100%
05.20
wed
DAY
78°F
SW 11 mph
precip
100%
NIGHT
74°F
SW 7 mph
precip
100%

Hilo Sea Water Temperature in May, °F

Select Year: 2025 2024 2023

The average sea surface temperature in May 2025 for Hilo was 25.4°F. The maximum and minimum values were 25.1°F and 25.7°F respectively.

Hilo on the Weather Map

Best Time to Visit Hilo
The most sunny months:
January 17 days
October 15 days
June 14 days
The most warm months:
September 81.3 °F
August 81.1 °F
October 81.0 °F
Warmest sea temperature:
September 83.7 °F
October 83.3 °F
August 83.1 °F
The most cold months:
March 75.8 °F
February 75.9 °F
April 76.0 °F
The most rainy months:
March 6 days
November 5 days
February 5 days
The most windy months:
March 8 mph
April 8 mph
August 8 mph
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